Boring mill and the like



A'pnl" 29, 1924. 1,492,103

" A. PARKES BORING MILL AND THE LIKE Filed Dec. '9; 1921 s Sheets-Sheet 1 April 29, 1924.

' l A. W. PARKES BORING MILL AND THE LVIKE Filed DeCw 9 1921 3 Sheets-$heet 5 Patented Apr. 29, 1924.

ALBERT W. ranrzns. or nunnAs, onrAiarp, CANADA, nssre noa 'ro NILES-BEMENT- POND oo vrrnn'r, or new roan; v. .,A oonroaa'rron or NEW JERSEY.

"some we we use Applioationfiled Deca ters, 1921. Seria1-1 Io.'521,1 72.

1 (ZZZ whom it may 00mm: rails and extending to a position of extreme 65 Be it known that I, ALBERT W. PAnnss, height above the rails.

subject of the King of Great Britain, resid- A further object of theinvention resides ing at Dundas, in the Province of Ontario in, the provision of a'taper bar attachment and Dominion of Canada, have invented cersecuredto and in combination with the said tain new and useful Improvements in Boring auxiliary rail. The auxiliary rail provides Mills and the like, of which the followingis a means for 'supporting'the taper bar witha specification. I out in any: waydisturbing 0r altering the This invention relates to boring mills, standardmachine.

U planers and like machines wherein are pro- "Wit-litheabove and other objectsin VlW,'

videdf a work table, one, or more uprights my invention consists in the featuresof conadjacent thereto and a crossrail on the upstruction and operation set forth in thefolrights for supporting a tool to operate on lowing specification and illustrated in the acwork carried by the table. In such machines, companying drawings. In such drawings as commonly constructed, a tool support or annexed hereto and forming a part of this saddle is mounted on the cross rail which specification, I have shown my invention must resist the entire thrust of the tool in embodied inrone' standard type of boring operation. When operating with very long mill but it will be'understood that the inventool bars orslides, the bars will. tend to tion can be otherwise embodied and that the vibrate and to, bend or spring under the drawings arenot to be construed as defining cutting strain and it is quite necessary't'o or'l'iniitingi the. scope of; the invention, the provide means for preventing such action. claims appended to this specification being This action maybepreventedto a certain relied uponfor that purpose. extent b using an-unusually wide cross Referring to the figuresotthedrawings:

rail. However, in orderto more eii'ectively F igure 1 is a perspective view'ot a boring prevent such action without changing the millhaving my invention embodiedtherein. construction of the standard machine, I pre- 1: 2: is a fragmentary side elevation for to retain the standard cross rail and use thereon. in combinationtherewith an auxiliary cross Fig. 3 is a fragmentary elevation of the rail. It is accordingly the primary object of cross rails showing the manner of supportthe invention to provide in combination with in the auxiliary cross rail on the main cross a tool supporting cross rail, an auxiliary rail. M cross rail preferably mounted on the main Fig. at is a plan view thereon. rail and engaging the usual supporting up- Fi'g..5 is an enlarged fragmentary detail rights in a manner and position to suppleview of one of the toolbar supporting slides mentally support the tool bar and prevent on the auxiliary rail. the vibration and springing thereof during- Fig. '6 is adetail cross sectional view oi the tooling operation. the auxiliary rail with one of the tool sup- Again, with machines of long tool bar ports thereon.

travel and the usual system of counter- Fig. 7 is a detail cross sectional view weighting the tool bars, it is necessary to through a tool support,taken on lines 7-7 carry the counterweighting chain pulleys at of Fig. 6. I I the back of the tool bar to an extreme height Fig. 8 is a fragmentary front elevation of to permit the required travel of the bar. the machine'showing a taper attachment ap-' This requires the brackets which carry the plied thereto.

'mlleys at the ends of the rail to extend very Fig. 9 is a longitudinal vertical section far from their supporting base. The auxilthereof on line 9-9 of Fig.8.

'ary rail above the main rail provides an Fig. 10 is a cross section thereof on line auxiliary support for these long brackets. 10-10 of Fig. 8.

it is accordingly another object of the inven- Fig. 1 1 is an end elevation of the auxiliary tion to provide in machines of the type decross rail with one of the taper bar 1piined. an auxiliary rail in combination with ports thereon. the main cross rail, and tool counterbal- As above stated, the primary object of the. arising means rigidly supported on both said invention is to provide in machines of the lDO type defined, an auxiliary cross, rail spaced from the main tool-supporting cross rail and operative to assist the main cross rail in supporting. the toolbar or slide against vibration and bending; The mainobject of the auxiliary rail is the refore'to provide a secondary support for the toolbar, and-to do. so with a minimum additional weight and provision for a maximumeffective length of travel for the toolbar. In earlier machines having a long bar travel and consequently great overhang to the toolbar fromthe saddle, much trouble has been experienced first by'the vibration of the lower end of the-bar when cutting at its; maximum distance from its support, andsecondly by the vibration of the upper end of the bar whenthe same'has been raised and is being used at its highest point. The auxiliary rail rests against the rupright'sxand provides a solid backing-for the ends of the tool bars." The auxiliary rail'also serves other usefulfunctions as will be hereinafter more specifically pointed out.

Among these functions are'the auxiliary supporting of the tool counterbalancing means and the supporting of the taperturningkattachmentl It will furthermore be noted that the tool slides or bars are mounted on the rails iIlaSllCh; manner as to permit angular movement thereof as in the stand 'ard machine. The specific mechanism illustrated in the drawingswill new be described.

Referring more specifically to the drawings by reference characters, 1 indicates the bed of a boring "mill'having a table 2 rotatably mounted thereon. A pair of uprights '3 are secured to the bed adjacent the table.v

a feed shaft 12 operating through a Worm and wormfwheel 13-, shaft '14 and ra pinion 15 in the usual manner.-

As will be noted, the tool bars 10 and 11 illustrated in the drawings are unusually k and long. When operating with the cross rail 4 lowered to a position adjacent the table, the extended upper ends of the tool bars will vibrate in the tooling operation unless such bars are supplementally supported to"prevent such action. Also when operating with the cross rail t raised to an extremely high position, the extended lower ends of the tool bars will tend to spring under the thrust of the work against tlletOOls. To prevent such objectionable action of the tool bars,.I'provide an auxiliary support in the formof the auxiliary cross rail heretofore mentioned and now to bespecifically described. a

The main cross rail 4' has mounted there'- on two auxiliary rail supporting blocks or brackets 16 on which is supported a relatively small auxiliary cross rail 17. This rail 17 is preferably in direct sliding en- 'gagement with the. uprights 3. The; tool supports 6 and 7 may be swiveled about a pivotal center on the saddles 6 and 7* there of in theusual manner, the engagement be-v tween-the tool supports and the auxiliary rail being such as to permit'this movement.

As illustrated, a pair of slides 18 are mounted on the auxiliary rail and each is provided with a pair of T-slots 19 vertically therein.f Bolts, 20 and. 21 projecting from each tool support haveheadsengaging'. in the slots. The opening 22 in the tool support through whichlthebolt- 21 projects is slightly extended laterallywhereby the tool support is permitted a slight lateral ,movement on the bolt 21 as the support is swiveled angularly about itspivot. A gib 23. is pro? vided for accurately the auxiliary rail.

The tool bars must balanced and the length of such bars and the long travel thereof require that the supporting; pulleys be placed at an. extreme necessarilyjbe c0unter-' fitting each slide 18, to

height -above1tl1e main rail. The auxiliary"- rail isused in connection with the main rail for supporting these pulleys; A pulley supporting bracket24- isprovided at each end ofthe rails- Eachbracket is bolted to both the main rail and-the auxiliary rail and car-V riesat its upper end pulleys 25 and 26. A 7

pair of pulleys 27 is provided on each tool support and a pulley 28 is mounted on a bracket 29 secured'to the side of each upright 3; Acord or chain 30 having counterweights 3l at its ends extends from the several pulleys, and engages a pulley 32 on each tool bar in the usual manner. Each tool bar is thereby counterbalanced in all its positions and by means of the auxiliary rail 17,

the pulleys 25 and 26 are firmly supported V at their extreme height. 7

As will be notedgthe use of the auxiliary rail requires practically no modification of the standard rail as used on'borin'g machines. Furthermore'the auxiliary rail engages directly against the uprights 3 and the tool supports have bearing against the auxiliary rail in a manner to firmly support the extended upper ends of the tool bars. The operative connection between the tool supports and the auxiliary'rail is such that each tool support is permitted its usual pivotal movement Without in any way interfering with the=firm supporting thereby by the auxiliary rail. seen that the main object of the invention and the several advantagesresultingthere from are fully accomplished in an improved It will, therefore, be

manner with a minimum'additional weight to the machine, a minimum of cost and al-.

teration to the machine, and with a maxi mum effective length of tool bar travel. ()ther features of advantage, including those heretofore defined, also result from the improved construction.

Another advantage resulting from the im proved construction is that the auxiliary rail provides an easy means for applying 7 without in any way a taper turning attachment to the machine disturbing the main rail or any of its operating parts. In Figs. 8 to 11 inclusive of the drawings, I have shown such an attachment applied to the auxiliary rail. A pair of supporting brackets 33 are slidably mounted on the auxiliary rail at opposite sides of the tool support 7 and may be secured in position thereon by means of bolts 34. Preferaly, each. of these brackets is. provided with a vertical T-slot 35 in the front face thereof. A taper bar' 36 is adjustably mounted on the brackets by means of bolts 35 engaging in the T-slots. A saddle 37 is slidably mounted on the taper bar and is swivelly connected to a bracket member 38 carrying a rotary nut 39. A screw i0 is threadably engaged by the nut 39 and at its upper end is provided with a bracket d1 having bolts 42 engaged within a vertical T-slot l3 in the tool bar 11. A vertical shaft ia parallel with the screw has splined, thereto a gear 425 rotatable in the bracket 38 and meshing with a gear 46 on the nut. The shaft may be rotated from a stub shaft 47 operatively connected to the shaft 44: through bevel gears 48. A knob 49 is provided on a rod 50 operatively connected to the pinion shaft 14 whereby the shaft with the rack and pinion 15 may be drawn outwardly to disengage the clutch 51 there on from the worm wheel 13 when using the taper attachment. 1

In operation, the taper bar supports 33 may be set to any desired position along the auxiliary rail. The taper bar may be angularly adjusted in a vertical plane through the T-slots 35 in the blocks to set the bar to the angle it is desired to cut the work IV. The nut 39 may be rotated from the stub shaft 47 to raise or lower the tool bar to place the tool in proper position relative tothe work. After these adjustments have been properly made, the cutting may proceed in the usual manner. It will be noted that as the tool support is fed along the rail t, the saddle 37 traverses along the taper bar and moves the tool vertically to a degree corresponding to the angular position of the taper bar. It should be particularly noted that the taper attachment may readily be applied to the machine shown in Fig. 1 without in any way modifying such machine.

What I claim is:

1. In a machine of the class described, the combination of a bed, a table mounted thereon.;an upright adjacent the table and having a portion of its exterior surface formed into a vertical guideway, a cross rail mount-' ed on the upright and engaging about the guideway, a screw extending vertically in the upright and engaging the cross rail to elevate the same, an auxiliary cross rail rigidly supported on and in spaced relation to the first named rail and in engagament with the upright, the auxiliary rail be ing parallel with the first named rail, and a tool support mounted on the first named rail auxiliary rail mounted on the said means above and 1n spaced relation to the cross.

rail, the auxiliary rail being in engagement with the upright and having a horizontal guideway thereon and a tool supporting member slidab-ly connected to the horizontal guidevvays.

3. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, each upright having the front surface thereof formed into a vertical guideway,ca cross rail mounted on and engaging about the guideways, screw means engaging the cross rail for elevating the same, an auxiliary cross rail above and in spaced relation with the first named rail and in engagement with the uprights, and a tool support mounted on the first named rail and operatively connected to the auxiliary rail.

4;. In a machine of the class described, the combination of a bed, a table movably mounted thereon, a pair of spaced uprights adjacentthe table, a cross rail engaging the uprights for vertical movement thereon. a rail elevating screw engaging the rail adjacent each upright, an auxiliary cross rail mounted on and in spaced relation with the first named rail and in engagement with the uprights, the auxiliary rail being parallel with the first named rail and a tool supporting means mounted on the first named rail and operatively connected to the auxiliary rail.

5. In a machine of the class described, the combination of a bed, a table mountedthereon, a pair of spaced uprights adjacent the table, each upright having the front face thereof formed into a vertical guideway, a cross rail mounted on andwengaging about the guideways, an auxiliary cross rail engaging the uprights above and in spaced relation with the first named rail, means rigidly securingthe rails together to move as a unit on the uprights, and a tool support operatively connected to both'rails. v

6.111 a machine of the. class described, the

- combination of a bed, a table'niounted thereon, a pairof spaced uprights adjacent the 7 table, each upright having the front face thereof formed into a vertical guideivay,

' a cross rail mounted on andengaging about the guidevvays, an auxiliary cross rail engaging the uprights above and in spaced relation with the first named rail, a portion of each rail'being. formed into a guideway, means including bolts for'securing the rails together to move as a unit on. the u 'irights,

' means for elevating the rails, and a tool support 'operatively connected to the guideivay v of each rail.

' plurality of supporting elements mounted on ways.

.7. In a machine'of the class described, the

combination of'a bed, a table mounted thereon, a pair of spaceduprights adjacent the table, each upright having the front facethereof formed into a vertical guideway, 21

crossrail mounted to slide vertically on the guideWays, the front face of the, cross rail being formed into a horizontal guideway, a

and extending upwardly from the. rail, an

' auxiliary rail mounted on the elements above and inspaced relationto the cross rail, the auxiliary rail being-1n engagement with the uprights and having a horizontal 'guidetvay thereon, and a tool supporting member slidably connected to the saidhorizontal guide- 8L In a machine of the class described, the combination of a bed, a tablemounted there on, a pair of spaced uprights adjacent the,

table, across rail mounted to slide vertically on the uprights, a rail elevating screw engaging the rail adjacent each upright, a plu rality of supporting blocks mounted on the top of the rail, and an auxiliary cross rail mounted on the tops'of the blocks and in en gagement With the uprights whereby to rigidly support the auxiliary rail on the main rail. r

9. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, each upright having the front face thereof formed into a vertical guideWay, a

cross rail mounted on and engaging about the guideivays, an auxiliary cross rail engaging the uprights above and in spaced relat on 'Wltll the "first named rail, means r'igidl'y securing, the'rails together to move as a unit on the uprights, a tool slide on one of the rails, and means including a counterbalance Weight'supporting bracket secured to one of the rails outside of the adjacentyupright for. counterbalancing the tool slide. V

10. In a "machine of the class described,

7 thejcombination of a bed, a table mounted thereon, a pairof spaced uprights adjacent the table, each upright having the front face tothe tool slide.

thereofformed into a vertical guideway, a

7 cross rail mounted on and engaging about the guideways, an auxiliary cross rail engaging the uprights above and in spaced relation With the first named rail, means rigidly securing the rails together to move as a unit on the uprights, a'tool slide on one of the rails, and means including a counterbalance weight supporting bracket secured to each end of the auxiliary rail outside of the up-,

rightsfor counterbalancing the tool slide.

11 In a machine of the class described,

the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, each upright having the front face "thereof formed into a vertical guideway, a cross rail mounted on and engagingabout the guideways, an auxiliary cross rail en gaging the uprights above and in spaced re- 'lation with the first named rail, means rig: V

idly securing therails togetherto move as a unit on the uprights, a tool support operatively connected to both rails, a tool slide in rails outside of theadjacent'upright, and a tool counterbalancing means comprising a the tool support, a counterbalance eightsupporting bracket secured to one of the Weight and a flexible connection therefrom supportedby the bracket and operatively connected to'the tool slide.

12. In a machine of 'the class described,

the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, a cross rail mounted to slide vertirail mounted on and in spaced relation with the first named rail and in engagement with the uprights, a tool-support mounted on the first named rail and'operatively connected to the auxiliary rail, a, tool slide in the tool support,a bracket secured to both rails outside of each upright, and a tool'counter-V balancing means comprising a Weight and a flexible connection therefrom supported by the said brackets and operatively connected 14. In a machine of'the class described,

the combination of abed, a table mounted thereon, a pair of spaced uprights adjacent the table, each upright having the front face thereof formed into a vertical guideway, a

cross rail' mounted on and engaging about the guideways, an auxiliary cross rail engagingthe uprights aboveand in spaced relation with the first named rail, means rig idly securing the rails together to move as a unit on the uprights, a saddle block slidable on the first named rail, and a tool supporting member swivelly mounted on the block and operatively connected to a block slidable on the auxiliary rail.

15. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, each upright having the front face thereof formed into a vertical guideway, a cross rail mounted on and engaging about the guideways, an auxiliary cross rail engaging the uprights above and in spaced relation with thefirst named rail, means rig idly securing the rails together to move as a unit on the uprights, a saddle block slidable on the first named rail, and a tool supporting member swivelly mounted on the block and having a bolt connection to a T-slot in a block slidable on the auxiliary rail, the bolt and T-slot connection being adapted to permit adjustment of the member about its swivel center and to secure the member in adjusted position.

16. In a machine of the class described, the

combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, a cross rail mounted to slide vertically on the uprights, a rail elevating screw engaging the rail adjacent each upright, a plurality of supporting blocksmounted on the top of the rail, an auxiliary cross rail mounted on the tops of the blocks and in engagement with the uprights, a tool supporting saddle mounted on the first named rail, a block slidably mounted on the auxiliary rail, and a tool support mounted for pivotal movement on the saddle and block.

17. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, a cross rail mounted to slide vertically on the uprights, a rail elevating screw engaging the rail adjacent each up right, a plurality of supporting blocks mounted on the top of the rail, an auxiliary cross rail mounted on the tops of the blocks and in engagement with the uprights, a tool supporting saddle mounted on the first named rail, a block slidably mounted on the auxiliary rail and provided with a plurality of T-slots therein, and a tool supporting element pivotally mounted on the saddle and having bolts therein engaging in the T-slots for pivotally connecting the element to the block and auxiliary rail.

18. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, a cross rail mounted to slide ver tically on the uprights, an auxiliary cross rail mounted on and in spaced relation with the first named rail and in engagement with the uprights, a tool support mounted on the first named rail and operatively connected to the auxiliary rail, a tool slide mounted in the tool support, a taper bar supported on the auxiliary rail, and an operative connection between the tool slide and taper bar. I

19. In a machine of the class described, the combination of a bed, a table mounted thereon a pair of spaced uprights adjacent the table, across rail mounted to slide vertically on the uprights, an auxiliary cross rail mounted on and, in spaced rela-- tion with the first named rail and in en gagement with the uprights, a tool support mounted on the first named rail and operatively connected to the auxiliary rail, a tool slide mounted in the tool support, a taper bar supported on the auxiliary rail and ad justable in a vertical plane to various angular positions relative thereto, and an adjustable operative connection between the tool slide and taper bar.

20. In a machine of the class described, the combination of a bed, a table mounted thereon, a pair of spaced uprights adjacent the table, a cross rail mounted to slide vertically on the uprights, an auxiliary cross rail mounted on and in spaced relationwith the first named rail and in engagement with the uprights, a tool support mounted on the first named rail and opera-tively connected to the auxiliary rail, a tool slide mounted in the tool support, a taper bar supported on and adjustable longitudinally of the auxiliary rail, the bar also being adjustable in a vertical plane to various angular positions relative to the auxiliary rail, and an operative connection between the tool slide and taper bar.

21. Ina machine of the class described, the combination of a bed, a table mounted. thereon. a pair of spaced uprights adjacent the table, a cross rail mounted to slide vertically on the uprights, an auxiliary cross rail mounted on and in spaced relation with the first named rail and in engagement with the uprights, a tool support mounted on the first named rail and operatively connected to the auxiliary rail, a tool slide mounted in the tool support, a taper bar supported on the auxiliary rail and adjustable in a vertical plane to various angular positions relative thereto, a saddle slidably engaging the taper bar, a. screw secured to the tool slide, a rotatable nut mounted in the saddle and threadedly engaging the screw, and means for rotating the nut to adjust the tool slide relative to the saddle.

In testimony whereof, I hereto afiix my signature.

ALBERT W. PARKES.

Witnesses:

' WILLIAM G. LAING,

JOSEPH IRWIN. 

